double-lock

[ duhb-uhl-lok ]

verb (used with object)

1. to lock with two turns of a key, so that a second bolt is engaged.
2. to fasten with particular care.

Word History and Origins

Origin of double-lock¹

First recorded in 1585–95

Example Sentences

The buccaneer went out, shutting Croustillac in by means of a double lock.

From Project Gutenberg

They shut up and double lock the doors and windows of their cabins at night to keep out evil spirits.

From Project Gutenberg

He had written much poetry about Lily, but he kept his lines safe under double lock and key.

From Project Gutenberg

Finally the double lock gave way and Tommy and Frank were precipitated headlong into the brightly lighted room beyond.

From Project Gutenberg

I shall double-lock myself in with him and have it out before I die, I'm quite certain of it.'

From Project Gutenberg